CN108591988A - Steam generation facility and its control method - Google Patents
Steam generation facility and its control method Download PDFInfo
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- CN108591988A CN108591988A CN201810401661.3A CN201810401661A CN108591988A CN 108591988 A CN108591988 A CN 108591988A CN 201810401661 A CN201810401661 A CN 201810401661A CN 108591988 A CN108591988 A CN 108591988A
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- Prior art keywords
- water
- steam generation
- generation facility
- heater
- temperature sensor
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- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 236
- 238000009835 boiling Methods 0.000 claims abstract description 18
- 239000008400 supply water Substances 0.000 claims abstract description 3
- 238000005086 pumping Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 239000008236 heating water Substances 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 13
- 238000009790 rate-determining step (RDS) Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010025 steaming Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 206010021036 Hyponatraemia Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cookers (AREA)
- Devices For Medical Bathing And Washing (AREA)
Abstract
The invention discloses a kind of steam generation facility and its control method, the control method includes S1：Said preset amount of water is added into the steam generation facility；S2：The water in the steam generation facility is heated to boiling, and keeps the first preset time t 1；S3:It is reference temperature T0 by the presently sensed thermograph in the steam generation facility, and it is V0 that the water supply to supply water into steam generation facility is controlled according to preset formula or preset table；S4：Every the second preset time t 2, it is actual temperature T1 by the presently sensed thermograph in the steam generation facility, the magnitude relationship of the actual temperature T1 and the reference temperature T0 are compared, and water supply V0 is adjusted so that the actual temperature T1 tends to the reference temperature T0 according to the magnitude relationship.The rate-determining steps of the control method of steam generation facility according to the ... of the embodiment of the present invention are simple, control high sensitivity and control is reliable.
Description
Technical field
The present invention relates to household electrical appliance technical fields, more particularly, to a kind of steam generation facility and its control method.
Background technology
Attention with people to healthy living, the product with steam generation facility is more and more, however, the relevant technologies
In steam generation facility, for example, boiler type steam generator, is usually fixedly connected with temperature sensor in outer bottom, passes through temperature
Spend sensor sensing temperature judgement heat-generating disc whether dry combustion method, but deposit the relatively low problem of sensing sensitivity, and can not solve
The problem of causing water storage to overflow for dilutional hyponatremia；And water level sensor is then usually arranged in sealed steaming vapour generator in head cover, though
The problem of water level so solved overflows, but exist temperature feedback can not be provided in time and be unfavorable for that incrustation scale is clean to ask
Topic, can greatly increase manufacturing cost, product structure is also more complicated if installing water level sensor and temperature sensor simultaneously.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of steaming
The control method of vapour generating means, the control method step of the steam generation facility is simple, control high sensitivity and control can
It leans on.
The invention also provides a kind of steam generation facilities of the control method of above-mentioned steam generation facility.
The control method of the steam generation facility of embodiment according to a first aspect of the present invention, includes the following steps：S1：To institute
It states and said preset amount of water is added in steam generation facility；S2：The water in the steam generation facility is heated to boiling, and holding first is pre-
If time t1；S3:It is reference temperature T0 by the presently sensed thermograph in the steam generation facility, and according to default public affairs
It is V0 that formula or preset table, which control the water supply to supply water into steam generation facility,；S4：It, will be described every the second preset time t 2
Presently sensed thermograph in steam generation facility is actual temperature T1, compares the actual temperature T1 and the reference temperature
The magnitude relationship of T0, and water supply V0 is adjusted so that the actual temperature T1 tends to the reference temperature according to the magnitude relationship
T0。
The control method of steam generation facility according to the ... of the embodiment of the present invention, by detecting the sensing temperature in steam generator
Degree, using multiphase contact heat transfer rule, dynamic adjusts control of the water supply realization to steam generation facility so that steam generator
Interior actual temperature T1 tends to reference temperature T0 always, supplied water using fixed compared to steam generation facility in the related technology or
The control mode that plus-minus water is carried out according only to temperature height maintains balance by the suitable water supply of dynamic control to reach, can
To effectively improve sensitivity and the reliability of control.
According to some embodiments of the present invention, preset temperature T2, the step S4 packets are equipped in the steam generation facility
It includes：As T1 ＜ T0, control water supply V0 increases；As T1=T0, control water supply V0 is constant；As T0 ＜ T1 ＜ T2, control
Water supply V0 processed is reduced；As T1 >=T2, controls the steam generation facility and stop heating.
According to some embodiments of the present invention, the preset formula is：V0=(P × 60)/(R+C × Δ T), wherein P is
The power of the heater, unit W；R is the latent heat of vaporization of the water in boiling point, unit kJ/kg；C is the specific heat capacity of water, single
Position is KJ/kg DEG C；Δ T is the temperature difference of the water from room temperature to boiling point, and unit is DEG C.
According to some embodiments of the present invention, the preset table is
| Power (W) | 300 | 500 | 700 | 900 | 1100 | 1300 | 1500 | 1700 | 1900 |
| Water supply (ml/min) | 6.94 | 11.57 | 16.20 | 20.83 | 25.46 | 30.09 | 34.72 | 39.35 | 43.98 |
Wherein, the boiling point of the water is 100 DEG C, the room temperature is 20 DEG C.
According to some embodiments of the present invention, the steam generation facility has water containing chamber and for heating the appearance water
The heater of intracavitary water, the corresponding height of water level of said preset amount of water of the water containing chamber are the 1/4 of the height of the water containing chamber or incite somebody to action
The height of water level when half of the heater in the vertical direction is submerged in water.
According to some embodiments of the present invention, first preset time t 1 is 30s-120s.
According to some embodiments of the present invention, second preset time t 2 is 15s-60s.
The steam generation facility of embodiment according to a second aspect of the present invention, including ontology, the ontology limit water containing chamber,
And the ontology is equipped with the venthole and water inlet being connected to the water containing chamber；Heater, the heater are set to described
Body；Temperature sensor, the temperature sensor is set to the ontology, and the temperature sensor is connected with heater insulation
And heat conduction each other；Water supply component, the water supply installation are connected with the water inlet；Control assembly, the control assembly with it is described
Temperature sensor, the water supply component and the heater are connected, and the control assembly is configured to be passed according to the temperature
The sensing signal of sensor controls the opening and closing of the water supply component and the heater.
Steam generation facility according to the ... of the embodiment of the present invention, by the way that insulation between temperature sensor and heater is connected,
And making therebetween can heat conduction each other, that is to say, that heat conduction connects between temperature sensor and heater, meanwhile, it adopts
It is controlled with the control method of the steam generation facility of embodiment according to a first aspect of the present invention, in this way, compared to related skill
Steam generation facility in art rationally controls the opening and closing of water supply component and heater by using control assembly, in nothing
In the case of additional member need to being increased, the control of water level and temperature may be implemented, improve control sensitivity, avoid overflowing, meanwhile,
Simplify overall structure, reduces manufacturing cost.
According to some embodiments of the present invention, the temperature sensor passes through insulating heat-conductive connector phase with the heater
Even.
According to further embodiment of the present invention, the insulating heat-conductive connector is Nickel Matrix Solder, aluminium casting or copper sheet, institute
Insulating heat-conductive connector is stated to be welded to connect with the temperature sensor and the heater respectively.
According to some embodiments of the present invention, the heater and the temperature sensor are set in the water containing chamber.
According to some embodiments of the present invention, the heater and the temperature sensor are set to the outer bottom of the ontology
Wall.
According to some embodiments of the present invention, the temperature sensor includes that the first temperature sensor and second temperature pass
Sensor, first temperature sensor and the second temperature sensor be arranged spaced apart and the difference with the heater respectively
Position keeps the connection of insulation and heat conduction.
According to some embodiments of the present invention, the water supply component includes：Water box, the water outlet of the water box and the appearance
The water inlet of water cavity is connected；Pumping device, the pumping device be set to water outlet and the water containing chamber of the water box water inlet it
Between, and the control assembly is connected with the pumping device to control the pumping device.
According to some embodiments of the present invention, the control assembly includes：Control panel, the control panel respectively with the temperature
Sensor, the heater and the water supply component is spent to be connected；First controller, first controller are set to the control
Between plate and the heater；Second controller, the second controller are set between the control panel and the water supply component.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the schematic diagram of steam generation facility according to the ... of the embodiment of the present invention；
Fig. 2 is the partial schematic diagram of steam generation facility according to the ... of the embodiment of the present invention；
Fig. 3 is the schematic diagram according to the steam generation facility of further embodiment of this invention；
Fig. 4 is the partial schematic diagram according to the steam generation facility of further embodiment of this invention；
Fig. 5 is the flow chart of the control method of steam generation facility according to the ... of the embodiment of the present invention；
Fig. 6 is temperature sensor sensing temperature and the pass of height of water level of steam generation facility according to the ... of the embodiment of the present invention
It is curve；
Fig. 7 is the module diagram of the control panel of steam generation facility according to the ... of the embodiment of the present invention.
Reference numeral：
Steam generation facility 100；
Ontology 10；Venthole 11；Water inlet 12；Water containing chamber 13；
Heater 20；Temperature sensor 30；
Control assembly 40；Control panel 41；First controller 42；Second controller 43；
Water supply component 50；Water box 51；Pumping device 52.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more this feature surely.The present invention's
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below with reference to the accompanying drawings steam generation facility 100 according to the ... of the embodiment of the present invention is described.
As shown in Fig. 1-Fig. 7, steam generation facility 100 according to the ... of the embodiment of the present invention includes ontology 10, heater 20, temperature
Spend sensor 30, water supply component 50 and control assembly 40.
Ontology 10 limits water containing chamber 13, and ontology 10 be equipped with the venthole 11 being connected to water containing chamber 13 and with appearance
The water inlet 12 that water cavity 13 is connected to, ontology 10 can be formed as enclosed construction, for example, as shown in Figures 1 and 2, it can also shape
As open design, for example, as shown in Figure 3 and Figure 4, when ontology 10 is open design, open ports can be formed as venthole
11, in this way, user can be supplied water by water inlet 12 into the water containing chamber 13 of ontology 10, and by the steam of generation from venthole
11 discharges.
Heater 20 be set to ontology 10, heater 20 can be heating tube or other heating structures, water supply component 50 with into
The mouth of a river 12 be connected, temperature sensor 30 is connected on ontology 10, between temperature sensor 30 and heater 20 heat conduction be connected, also
It is to say, connection of insulating between temperature sensor 30 and heater 20, but the two heat conduction each other, for example, temperature sensor 30 and hair
It can be in direct contact connection between hot body 20, can also be indirectly connected with and (such as be connected by insulating heat-conductive connector), control assembly
40 are connected with temperature sensor 30, water supply component 50 and heater 20 respectively, also, control assembly 40 can be according to temperature sensing
The water supply of the sensing signal control water supply component 50 of device 30, and control the opening and closing of heater 20.
As shown in Figure 6, according to multiphase contact heat transfer rule, when higher (such as temperature sensor of water level in water containing chamber 13
30 and heater 20 it is submerged in water) when, the sensing temperature of temperature sensor 30 is limited by the boiling temperature of water, slightly above this
When boiling temperature；
When the water level in water containing chamber 13 is reduced to 20 part of heater to expose the surface, temperature sensor 30 is completely exposed the water surface
When, what temperature sensor 30 sensed at this time is water, steam and is connect with 30 heat conduction of temperature sensor (insulation but heat conduction each other)
The temperature that the mixed heat passed over generates, since the density of steam is low, thermal conductivity is poor compared to water, therefore, with dampening
Position declines, and the steam accounting of contact temperature sensor 30 increases, and the sensing temperature of temperature sensor 30 is caused to continuously decrease；
When water level further decreases, such as heater 20 is completely exposed the water surface, at this point, heater 20 is almost dry
It burns, the heat of heater 20 can not transmit, can only be connect by the heat conduction between temperature sensor 30 and be transferred to temperature sensing
Device 30, so that temperature sensor 30 is rapidly heated.
In this way, user according between the sensing temperature and water level of temperature sensor 30 relation curve and multiphase mix biography
Thermal gauge is fixed, and control assembly 40 is by controlling the opening and closing of coupled heater 20, and control water supply component 50
Water supply, to realize for the water level of steam generation facility 100 and the control action of temperature, both can be to avoid water containing chamber
13 water overflows, convenient for cleaning incrustation scale, while can also simplify overall structure, reduces manufacturing cost.
Steam generation facility 100 according to the ... of the embodiment of the present invention as a result, by by temperature sensor 30 and heater 20 it
Between insulate and be connected, and making therebetween can heat conduction each other, that is to say, that is led between temperature sensor 30 and heater 20
It is thermally connected, in this way, compared to steam generation facility 100 in the related technology, by using control assembly 40, rationally control is supplied water
Water level and temperature may be implemented without increasing additional member in the opening and closing of component 50 and heater 20
Control improves control sensitivity, reliability, avoids overflowing, meanwhile, simplify overall structure, reduces manufacturing cost.
In some embodiments of the invention, it can be connected by insulating heat-conductive between temperature sensor 30 and heater 20
Part realizes that connection, insulating heat-conductive connector can be the component of high heat conductance material, and further, insulating heat-conductive connector can be with
For Nickel Matrix Solder, aluminium casting or copper sheet, is realized and welded by insulating heat-conductive connector between temperature sensor 30 and heater 20
It connects in succession, the heat conductivility of high heat conductance material is thus utilized, to ensure the heat between temperature sensor 30 and heater 20
Amount is transmitted, and then ensures sensitivity and reliability of the steam generation facility 100 to temperature and water level control.
Such as Fig. 1 and Fig. 2, in some embodiments of the invention, heater 20 and temperature sensor 30 are set to water containing chamber
In 13, wherein heater 20 can be set to the location A in Fig. 2, can also be set to B location or other positions, people in the art
Member can be adjusted according to actual design demand in order to which (heat conduction connects the heat conduction connection between heater 20 and temperature sensor 30
Refer to insulation connection therebetween and heat conduction each other).
Such as Fig. 3 and Fig. 4, in other embodiments of the present invention, heater 20 can be set to the exterior bottom wall of ontology 10, together
When, temperature sensor 30 can also be set to the exterior bottom wall of ontology 10, and heater 20 is by the exterior bottom wall of heater body 10 (such as heat
Disk) water in water containing chamber 13 is heated, and temperature sensor 30 then detects the sheet being in direct contact with the water in water containing chamber 13
The temperature of the exterior bottom wall of 10 bottom of body, the installation position of temperature sensor 30 can be the positions a in Fig. 4, or the positions b
Or other positions, in the detection sensitivity higher close to the positions b of heater 20, those skilled in the art can be according to design need
It asks and is adjusted to ensure that (heat conduction connection refers to therebetween for heat conduction connection between sensitivity and heater 20 and temperature sensor 30
Insulation connection and heat conduction each other) convenience.
In some embodiments of the invention, to further increase the sensitivity of the control of steam generation facility 100 and accurate
Degree, temperature sensor 30 may include the first temperature sensor 30 and second temperature sensor 30,30 He of the first temperature sensor
Second temperature sensor 30 is arranged spaced apart, also, insulation is kept with the different parts of heater 20 respectively for the two and heat conduction connects
It connects.
As Figure 1-Figure 4, in some embodiments of the invention, water supply component 50 includes water box 51 and pumping device 52,
The water outlet of water box 51 is connected with the water inlet 12 of water containing chamber 13, such as is connected by aqueduct, and pumping device 52 is located at water box 51
Water outlet and the water inlet 12 of water containing chamber 13 between, pumping device 52 can be water pump, in this way can be by water using pumping device 52
Water in box 51 is pumped into time in water containing chamber 13, and can adjust water supply, to realize for water level and temperature can
By control.
As shown in Fig. 1, Fig. 3, Fig. 7, in some embodiments of the invention, control assembly 40 includes control panel 41, first
Controller 42 and second controller 43, control panel 41 may include the heating power control module of heater 20, temperature detection mould
Block, timing and surge detection module, water supply ratio computing module and water supply control module, control panel 41 respectively with heater 20,
Temperature sensor 30 and the connection of water supply component 50 are to realize to heater 20, temperature sensor 30 and water supply component 50
Control, the first controller 42 are located between heater 20 and control panel 41, and second controller 43 is located at water supply component 50 and control
Between plate 41, such control panel 41 can realize the control to heater 20 by the first controller 42, pass through second controller
43 realize the control to water supply component 50.
Below with reference to the accompanying drawings the control method of steam generation facility according to the ... of the embodiment of the present invention is described.
The control method includes the following steps:
S1:Said preset amount of water is added into steam generation facility；
S2：Water in steam generation facility is heated so that water is heated to fluidized state, and holding first is pre-
It is subsequently more accurate to the temperature sensing in steam generation facility to ensure if time t1；
S3：Current Temperatures in steam generation facility are detected, and it is reference temperature T0 to record presently sensed temperature,
The reference temperature as follow-up fluctuation center calculation is that is to say, according to the power of steam generation facility, current room temperature and water
Boiling point will be V0 to the control of the water supply of steam generation facility using preset formula or preset table；
S4：, it is actual temperature by the presently sensed thermograph in steam generation facility every the second preset time t 2
The magnitude relationship of T1, comparison actual temperature T1 and reference temperature T0 adjust the confession into steam generation facility according to magnitude relationship
Water V0 so that the current actual temperature T1 sensed in steam generation facility can level off to reference temperature T0, in other words,
It is so that the current actual temperature T1 of the temperature sensor sensing in steam generation facility is centered on reference temperature T0
Value fluctuation.
The control method of steam generation facility according to the ... of the embodiment of the present invention, by detecting the sensing temperature in steam generator
Degree, using multiphase contact heat transfer rule, dynamic adjusts control of the water supply realization to steam generation facility so that steam generator
Interior actual temperature T1 tends to reference temperature T0 always, supplied water using fixed compared to steam generation facility in the related technology or
The control mode that plus-minus water is carried out according only to temperature height maintains balance by the suitable water supply of dynamic control to reach, can
To effectively improve sensitivity and the reliability of control.
With reference to steam generation facility according to the above embodiment of the present invention, specifically describe according to the ... of the embodiment of the present invention
The control method of the control method of steam generation facility, the steam generation facility includes the following steps：
S1：Control water supply component supplies water into water containing chamber so that water reaches said preset amount of water in water containing chamber；
S2：Control heater be powered, fever, and the water in water containing chamber enter after fluidized state keep first it is default when
Between t1, it will be appreciated by persons skilled in the art that the water in water containing chamber enters the time needed for fluidized state according to different
The body construction of steam generation facility is different and different, generally requires 5s-60s, for example, the power when heater is more than 15w/
cm2When, when coming to life, dynamic water table can go up to flooding heater and temperature sensor said preset amount of water；
This is, does not control water supply component and supplies water, and is to continue with so that heater the first preset time t 1 of heating, (first
Preset time t 1 is reduced with the increase of heater power), to ensure the sensing temperature more temperature and standard of temperature sensor
Really.
S3：It records the presently sensed temperature detected by temperature sensor at this time to be used as with reference to temperature T0, that is to say conduct
The reference temperature of follow-up fluctuation center calculation, according to the power of heater, the boiling point of current room temperature and water, using preset formula
Or preset table, control assembly calculate current theoretical water supply V0, the water supply control of water supply component is by control assembly
V0, it will be appreciated by persons skilled in the art that since there is heater certain heat to consume, the reason of water supply component
Can be slightly smaller by water supply V0, for example, according to preset table, heater power is 1500W, and room temperature is 20 DEG C, and boiling point is
At 100 DEG C, theoretical water supply V0 is 34.72ml/min, can smaller be 30ml/min when the water supply of water supply component is arranged；
S4：Every the second preset time t 2, the presently sensed thermograph by temperature sensor detection is actual temperature T1,
The magnitude relationship for comparing actual temperature T1 and reference temperature T0, according to magnitude relationship, control assembly adjusts the water supply of water supply component
Measure V0 so that the current actual temperature T1 of temperature sensor sensed can level off to reference temperature T0 and in other words that is to say
So that the current actual temperature T1 of the temperature sensor sensing in water containing chamber is worth fluctuation centered on reference temperature T0.
The control method of steam generation facility according to the ... of the embodiment of the present invention as a result, by using the steaming of above-described embodiment
Temperature sensor is connected with heater insulation, and makes the two heat conduction each other by vapour generating means, to be passed by temperature
The sensing temperature of sensor is realized by adjusting the water supply of water supply component to steam generation dress using multiphase contact heat transfer rule
The control set so that the actual temperature T1 of temperature sensor tends to reference temperature T0 always, is sent out compared to steam in the related technology
The control mode that plus-minus water is carried out using fixed water supply or according only to temperature height of generating apparatus, is suitably supplied by dynamic control
Water maintains balance to reach, and can effectively improve sensitivity and the reliability of control.
Such as Fig. 6, in some embodiments of the invention, temperature sensor is equipped with preset temperature T2, and preset temperature T2 can be with
As alarm temperature；
Step S4 includes：As T1 ＜ T0, i.e., the water level in current water containing chamber is low, and control assembly controls water supply component at this time
Water supply V0 increase；As T1=T0, that is to say, that actual temperature returns to fluctuation central value (reference temperature T0), control at this time
The water supply V0 of component control water supply component processed is constant；When T0 ＜ T1 ＜ T2 (at this point, T1 is no apparent and is rapidly heated), control
The water supply V0 of component control water supply component processed is reduced；As T1 >=T2, that is to say, that T1 has been more than alarm temperature, at this point, steaming
Heater almost dry combustion method in vapour generating means, temperature significantly improve, and control assembly controls heater and closes, also, is lacked
Water is alarmed.
For example, when T1 has dropped 2 ° compared to T0, water supply V0 is become into 31ml/min, if actual temperature T1 is still declining
Or remained unchanged in new numerical value, then it is 31.5ml/min that water supply V0, which increases, and more adjusting, increased amount is fewer, and so on,
Fluctuation center (reference temperature T0) is returned to the actual temperature T1 that temperature sensor measures.
If actual temperature T1 returns to fluctuation central value (reference temperature T0), maintain new water supply V0 constant, such as just
The 31.5ml/min said.If in next observation period (the second preset time t 2), actual temperature T1 is higher than fluctuation central value (reference
Temperature T0), then using the control mode (such as becoming 31.2ml/min) of reduction water supply V0 similar to above.
Finally, when the water source in water supply component exhausts, control assembly is adjusted anyway is all unable to maintain that steam generation fills
When fluctuation central value (reference temperature T0) in the water containing chamber set, the presently sensed practical temperature when temperature sensor can be defined
Degree T1 carries out water Out alarm processing afterwards more than certain level (such as preset temperature T2) (program operation stops).
Thus, it is possible to effectively realize in water containing chamber water level and temperature control, can also both protect to avoid excessive
Card is to the sensitivity of temperature and the reliability used and safety.
In some embodiments of the invention, preset formula is：V0=(P × 60)/(R+C × Δ T), wherein P is described
The power of heater, unit W；R is the latent heat of vaporization of the water in boiling point, unit kJ/kg；C is the specific heat capacity of water, and unit is
KJ/kg·℃；Δ T is the temperature difference of the water from room temperature to boiling point, and unit is DEG C.
In other embodiments of the present invention, when the boiling point of water is 100 DEG C, room temperature is 20 DEG C, preset table is
| Power (W) | 300 | 500 | 700 | 900 | 1100 | 1300 | 1500 | 1700 | 1900 |
| Water supply (ml/min) | 6.94 | 11.57 | 16.20 | 20.83 | 25.46 | 30.09 | 34.72 | 39.35 | 43.98 |
It is understood that the numerical value that upper table is listed, under different boiling and room ambient conditions, the water supply of acquisition should be
Different, it is read out, controls so as to further facilitate control assembly, improve feedback efficiency.
In Fig. 1 and Fig. 3, in some embodiments of the invention, the corresponding height of water level of said preset amount of water can be to hold water
A quarter of height of chamber or so or in the vertical direction, height of water level when heater half is submerged in water, in this way
It can ensure that dynamic water table can substantially flood temperature sensor and heater when the water in water containing chamber reaches fluidized state, and
Regulate and control convenient for the water supply of subsequent water supply component, avoids overflowing.
In some embodiments of the invention, the first preset time t 1 can be any value in 30s-120s, for example, t1
Can be 30s, or the power of 90s, 120s or other values, heater is also big, and the first preset time t 1 is also shorter, from
And ensure the stability and reliability of temperature sensor measurement.
In some embodiments of the invention, the second preset time t 2 can be 15s-60s, for example, t2 can be 15s,
May be 30s or 60s, in this way, the second preset time t 2 can be as the actual temperature T1 of detection temperature sensor sensing
The no observation period for returning to fluctuation central value (reference temperature T0), to realize tapering type adjustment, guarantee accurately control water supply and
Temperature.
The control method of steam generation facility and steam generation facility according to the ... of the embodiment of the present invention other constitute etc. with
And operation is all for those of ordinary skills known, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (15)
1. a kind of control method of steam generation facility, which is characterized in that include the following steps：
S1：Said preset amount of water is added into the steam generation facility；
S2：The water in the steam generation facility is heated to boiling, and keeps the first preset time t 1；
S3:Be reference temperature T0 by the presently sensed thermograph in the steam generation facility, and according to preset formula or
It is V0 that preset table, which controls the water supply to supply water into steam generation facility,；
S4：It is actual temperature T1 by the presently sensed thermograph in the steam generation facility every the second preset time t 2,
Compare the magnitude relationship of the actual temperature T1 and the reference temperature T0, and according to the magnitude relationship adjust water supply V0 with
The actual temperature T1 is set to tend to the reference temperature T0.
2. the control method of steam generation facility according to claim 1, which is characterized in that set in the steam generation facility
There are the preset temperature T2, the step S4 to include：
As T1 ＜ T0, control water supply V0 increases；
As T1=T0, control water supply V0 is constant；
As T0 ＜ T1 ＜ T2, control water supply V0 is reduced；
As T1 >=T2, controls the steam generation facility and stop heating.
3. the control method of steam generation facility according to claim 1, which is characterized in that the preset formula is：
V0=(P × 60)/(R+C × Δ T),
Wherein, P is the power of the heater, unit W；R is the latent heat of vaporization of the water in boiling point, unit kJ/kg；C is
The specific heat capacity of water, unit are KJ/kg DEG C；Δ T is the temperature difference of the water from room temperature to boiling point, and unit is DEG C.
4. the control method of steam generation facility according to claim 1, which is characterized in that the preset table is
Wherein, the boiling point of the water is 100 DEG C, the room temperature is 20 DEG C.
5. the control method of steam generation facility according to claim 1, which is characterized in that the steam generation facility has
Water containing chamber and heater for heating water in the water containing chamber, the corresponding water level of the said preset amount of water in the water containing chamber
Height is 1/4 or the water by the half of the heater in the vertical direction when submerged in water of the height of the water containing chamber
Position height.
6. the control method of steam generation facility according to claim 1, which is characterized in that first preset time t 1 is
30s-120s。
7. the control method of steam generation facility according to claim 1, which is characterized in that second preset time t 2 is
15s-60s。
8. a kind of steam generation facility is carried out using according to the control method of any steam generation facility in claim 1-7
Control, which is characterized in that including：
Ontology, the ontology limits water containing chamber, and the ontology is equipped with the venthole being connected to the water containing chamber and water inlet
Mouthful；
Heater, the heater are set to the ontology；
Temperature sensor, the temperature sensor are set to the ontology, and the temperature sensor and heater insulation phase
Company and heat conduction each other；
Water supply component, the water supply installation are connected with the water inlet；
Control assembly, the control assembly is connected with the temperature sensor, the water supply component and the heater, described
Control assembly is configured to control the water supply component and the heater according to the sensing signal of the temperature sensor
It opens and closes.
9. steam generation facility according to claim 8, which is characterized in that the temperature sensor is logical with the heater
Insulating heat-conductive connector is crossed to be connected.
10. steam generation facility according to claim 9, which is characterized in that the insulating heat-conductive connector is Ni-based weldering
Material, aluminium casting or copper sheet, the insulating heat-conductive connector are welded to connect with the temperature sensor and the heater respectively.
11. steam generation facility according to claim 8, which is characterized in that the heater and the temperature sensor
In the water containing chamber.
12. steam generation facility according to claim 8, which is characterized in that the heater and the temperature sensor
Set on the exterior bottom wall of the ontology.
13. steam generation facility according to claim 8, which is characterized in that the temperature sensor includes the first temperature
Sensor and second temperature sensor, first temperature sensor is arranged spaced apart with the second temperature sensor and divides
The connection of insulation and heat conduction is not kept with the different parts of the heater.
14. steam generation facility according to claim 8, which is characterized in that the water supply component includes：
Water box, the water outlet of the water box are connected with the water inlet of the water containing chamber；
Pumping device, the pumping device is set between the water outlet and the water inlet of the water containing chamber of the water box, and the control
Component is connected with the pumping device to control the pumping device.
15. steam generation facility according to claim 8, which is characterized in that the control assembly includes：
Control panel, the control panel are connected with the temperature sensor, the heater and the water supply component respectively；
First controller, first controller are set between the control panel and the heater；
Second controller, the second controller are set between the control panel and the water supply component.
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| CN201810401661.3A CN108591988B (en) | 2018-04-28 | 2018-04-28 | Steam generating device and control method thereof |
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|---|---|---|---|
| CN201810401661.3A CN108591988B (en) | 2018-04-28 | 2018-04-28 | Steam generating device and control method thereof |
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Cited By (1)
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| CN108591988B (en) | 2020-11-03 |
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